Corn Snake Care Calculators & Charts

Last updated: September 25, 2026 · Reviewed against sources listed below

Corn snake care comes down to a few numbers: mouse size, days between meals, temperature and humidity. This corn snake care sheet puts them in one place, with a feeding calculator that works from your snake’s weight.

Quick facts

Adult length

3–5 ft91–152 cm

Lifespan

15–20 years

Adult weight

300–900 g (11–32 oz)300–900 g

Diet

Carnivore (mice)

Basking spot

85–90°F29–32°C

Humidity

40–60% (65–75% in shed)

Corn Snake calculators

Corn Snake charts and guides

Corn snake care at a glance

The corn snake (Pantherophis guttatus) comes from the southeastern United States, where it lives in fields, pine forests and around farm buildings. It is gentle, easy to handle, eats frozen mice readily and comes in hundreds of color patterns, which is why it is one of the most recommended first snakes. With good care, 15–20 years is a typical lifespan, and some live longer.

Heat. Give a warm end of about 85–90°F29–32°C, a cool end of 70–80°F21–27°C, and nights of about 65–75°F18–24°C. Run every heat source on a thermostat.

Humidity. Corn snakes are comfortable at moderate humidity, about 40–60%. Raise it to about 65–75% when your snake is getting ready to shed, for example with a humid hide.

Hides. Offer at least two hides, one at each end, plus branches or cork bark. Corn snakes are good climbers and explore more when they have cover.

Feeding. Corn snakes eat whole mice, from pinkies for hatchlings to adult mice for grown snakes. Prey size and feeding interval depend on weight, which is what our corn snake feeding chart and snake feeding calculator work out for you.

How our tools help

Weigh your snake in grams and enter it in the snake feeding calculator. You get the prey weight range, the mouse size to buy, how many days to wait between meals and a printable feeding log. Compare your snake’s weight with the corn snake growth chart, size its home with the enclosure calculator, and check your readings with the temperature and humidity checker.

Is a corn snake a good first snake?

For most people, yes. Corn snakes stay a manageable size, rarely bite once they are used to handling, and usually accept frozen-thawed mice without fuss. Their needs are moderate: a secure enclosure, a warm end and a cool end, and a meal every one to two weeks.

Two things surprise new owners. First, corn snakes are escape artists, so the enclosure needs a lid that locks. Second, hatchlings are small, fast and nervous. They usually calm down within a few months of gentle, short handling sessions.

Common beginner mistakes

1. A lid that does not lock. Corn snakes push through small gaps and loose lids. Use clips or a locking enclosure, and check it after every feeding.
2. Feeding live mice. A live mouse can bite and injure a snake. Frozen-thawed mice are safer and most corn snakes take them readily.
3. No temperature gradient. Heating the whole enclosure evenly takes away your snake’s choice. Keep one end warm and one end cool.
4. Handling right after a meal. Handling too soon after eating can make a snake bring its meal back up. Wait at least 48 hours.
5. Power feeding. Feeding very large meals very often to speed growth leads to obesity. Follow the interval for your snake’s weight.

Recommended corn snake gear

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Enclosure with a locking lid

Corn snakes are skilled escape artists; secure latches matter more than anything else.

Check price on Amazon

Thermostat

Every heat source should run on one to prevent burns and overheating.

Check price on Amazon

Digital thermometer with probe

Checks the warm and cool ends accurately; stick-on dials are often wrong.

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Digital kitchen scale (grams)

Weighing is the only reliable way to size prey and track growth.

Check price on Amazon

Sources

• PetMD — Corn Snake Care Sheet (written by a veterinarian)
• RSPCA — How to Care for a Corn Snake
• VCA Animal Hospitals — Snakes: Housing
• ReptiFiles — Corn Snake Care Guide
• Wikipedia — Corn snake

Where sources disagree we show the range they share. See our sources and methodology for how every number is checked.

Results are estimates for healthy animals. Always consult a reptile veterinarian for individual advice. Read our disclaimer.